@book{7342,
	author = { Ross, Stephen A and  Westerfield, Randolph},
	title = {Essentials of Corporate Finance.},
	publisher = { McGraw-Hill ,},
	year = {2008.},
	address = {Boston :},
	url = {https://www.amazon.com/Essentials-Corporate-Finance-Stephen-Ross/dp/0074716700}
}